Improvement in stump-extractors



UNITED STATES PATENT OFFICE.

WILLIAM LANGDON, OF LAN GDONS STATION, PENNSYLVANIA.

u Specification forming part of Letters Patent No. 55,314, dated June 5, 1866.

To all whom it may concern:

Be it known that I, WILLIAM LANGDON, of Langdons Station, in the county of Erie and State of Pennsylvania, have invented a new and useful improvement on the lever of the rst kind; and I do hereby declare that the bllowing; is a full, clear,and exact description of the construction and operation ot the same, reference bein g had to the annexed drawin g, making a part of this specification.

A B represent a wooden shaft; K h i l j, straps of iron around the end, bolted by F l, and Kj heavy bolts. The head of the bolt FZ is a hook to hohl the chain. -F GE, the chain, constructed with flat links 5 E, hook for attaching to or catching the body tolbe moved; G, strap to keep the chain in place; C. fulcrumblock; 1,fulcruin shaft or pivot; l hdi, a circle. The pivot d passes through the lever at about one-third or one-halt'of the distance from the center ot' the circle to the pointz' in the circumference. d 7L, the short arm of' the lever when it is raised up to catch the Weight; dB, the short arm of the lever when the force has been exerted and the long arrn brought partly down; d i, the short arm after the long arm has been brought down.

The shaft A B may be of iron. The band j l t K would not then be necessary. v

In operating the lever the hook E is an iinproved means of catching the Weight. In raising weights, like a railroad-track for repairs, When the downward pressure of the weight increases as it is raised, this improvement has the advantage ofthe eccentric lever. The short arm becomes shorter as the force required is greater. d Bis shorter than rl h, and d 12 shorter than d B, &c.

The lever may be formed by leaving out part of the circle lm t' d, and having a deep notch at d to rest on a detached fulcruxn, C, solid from d down.

What I claim as my invention, and desire to secure by Letters Patent, is-

The eccentric short arm of the lever of the irst kind, in connection with the chain and hook, substantially as described.

WM. LANGDON.

Witnesses: A

I. W. WITMORE, E. OAMPHAUSEN. 

